Incandescent electric lamp



(No Model.)v

A. C. CAREY. INCANDESCBNT ELECTRIC LAMP.

l a I I b ii;

Wt bz ess ew' 7 Q J v I 7 l r o l I 7 To all whom itmay concern; 1 ,Beit known thatl, Aucnsrus G.'CaRnY,acitizen of the United States,residing at Lake Pleasant, in the countyof-Franklin and State.

5 of Massachusetts, have invented a certain new and nsefullmprovement inCouplings for Securing Carbons in Incandescent Electric.

- Lamps, (for which have obtained apatent in Great Britain, dated March8, 1892, No. 4,578,)

:9 of which the following is a full, clear, and ex;

.actilescription. t

Thisinvention relates to a coupling for uniting the carbon or centelectric lamps with the leading-inQwires,

r 5 either forpurposes of renewing the'carb'on or filament orforrinserting it in-' the .first instance; vention are to facilitate theapplication of the couplings to the filament,"to. secure good con-' 2tact-between the parts united, and to insure the firm union of thecoupling andleading-in wires. 1i.

' The invention consists of ,a coupling made asa metal tube preferablyconstricted about- 25 midway betweenuits'ends, so as to preventthe 50 bevariouslyconstructed-ms, for example, by rolling a sheet ct metal'uponitself one or UNITED STATES P EN Osrrcs fAUeUs'rUs o. CAREY, or LAKEPLEASANT, M'A ssAonUsfir-rs;

INCANDESCENT steeralc LAMP.

srncmcanon forming part of Letters mam teamed newest: s, is

's n geanm g mraez. nannies. (roman;'Pstentedinflnglendltrcht,186$,lim4,

adhesion of the-cement supporting the couplings while the,- filament isbeing applied extent to which 50 wires shall enter such couplings, andthereby afiordgo'od contact between them, the said cou lings and unitedby-c'rimping or bending themwhe'n in position, x r 5 a In theaccompanying drawings,-illustrating. v my i-nvention,'in the severalfigures like parts are similarly designated, Figure 1 is an elevation ofa'cominon form of glowlamp supplied with 'my couplings. Fig. 2 is a '0partly-sectional elevation, on a larger scale, of the glass-standard andthe adjacent parts;

. gs large scale, of two coupling; v Thecoupliug a of thiai'nven'tiou isa tube of suitable length crimpe or otherwise constrictedaboutmidway ofits ends, as at b, so as to close or nearly close its passage-way moretimes, as in Fig. 3; 'or,'as in maybe made byboring a straight, or.other hole-in a rod. bar, or cylinde or it maybe of tubular wire.Thetion 1) may be'formed by any suit! Of course I do not limit myinventi plying the constrictions b at exactly between the endsot the-couplings, may be arranged m ny point bet ends 'thereofi j l; r Inusing couplings havi'n'g no 001 when they are mounted on w'ite-su holdthem up while-the filament is and cemented in thecementnppli ends of,the filament -runs down-the the couplings and cementsthe com thewire=suppdrts making it vary 6 remove the couplings without bre:filament; but'by constricting the as in this invention, the openings oflings are closed, so that the ends 0 ment 0 are sure to come into contacmetal of the couplings, and the com ing the holes, fastens the ends 'oiith there, and none of the cement can the constrictions, so that the coupbe removed from the wire-support fect ease and no filamentsare brokthe'co'uplin'gs .arexplaced on the wires e e, inside the lamp,'andinste: pinched on they are crimped on, as: and 2. The difference betweenpii crimping is shown fromthe facttha coupling may getloose from thewires by heating and cooling-the expanding and contracting, incide thelamp-and drop off or result in tact, 0n the other hand, if the arecrimped on the leading-in wir crimped or zigzagged, and even i lingsshould become alittle loose or sides are in-good contact with! in wireswhether the lamp'is pm or otherwise. j

As the conplingis of electricallymaterial and the leading-in wire of thecarbon or filament are sep by the constrictions in the couplir .viousthat very perfectcontacts a What I claim is- 1. The combination, withtlu filament of ineandes-' and the principal objectsof t-heinto theholders for thereto and todeterminethe the carbon and leading-inleading-in wires being firmly of which 3-and 4 areperspective views, ona very forms of my constricted bent, broken down,

or opening. This coupling may wires and carbon or filament of anin'candesconstricted between their ends and connected cent electriclamp, of couplings constructed with the leading-in wires by crimpingsaid as tubes constricted between their ends and wires and couplingstogether transversely, y applied tothe ends of such wires by crimpingsubstantially as described. Q r t 5 or bending them togethertransversely and In testimony whereof I have hereunto set :5 cemented tothe carbon or filament, substenmy band this 13th day of January, A. D.1892; r

tially as described. I r r AUGUSTUS G. CAREY. D

2. In awn-incandescent electric lamp, the Witnesses: s combination, withthe leading-in wires, and HENRYE. WILKINS,'

10 the filament or carbon, of cou plingstherefor I G. A. FREI

